They are all clocked at 2x 915MHz, have 1502MHz memory, the Shaders work at 2x 915MHz and come with 2x 256 bit memory interface for 2x 1536 stream processors and 2x 128 texture memory units. This card is way too expensive for our taste but it is at least neater solution than two GTX 680 or two Radeon HD 7970 cards.